<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>文本修饰</title>
    <style>
        h1 {
          font-size: 40px;
          /* css3将text-decoration变成了一个复合属性  */
          text-decoration:pink dashed overline;
        }
    </style>
</head>
<body>
  <h1>你好啊</h1>
</body>
</html>